Types of coordination:

Nervous Coordination is brought about through the various elements of the nervous system which are:

(i) Receptors                                        (iv) Motor neurons or nerves

(ii) Sensory neurons or nerves            (v) Effectors organs

(iii) Central neurons system (brain and spinal cord), made of associative neurons (inter-neurons)

The stimuli are received by the receptors which convey the messages to the CNS through sensory neurons or nerves. CNS consolidates the information of stimuli, comprehends it and formulates the type of response to be produced. The messages of the type of response are passed via motor neurons or nerves to the particular effectors which produce a specific response.

Nervous coordination is usually involved in producing rapid and short lived responses.

Receptors:

 Cells that receives a stimulus (as light or heat) and activates an associated nerve to send a message to the brain and that may be grouped into a sense organ (as a taste bud)

Effectors

An effector is any part of the body that produces the response. Here are some examples of effectors:

• a muscle contracting to move the arm
• a muscle squeezing saliva from the salivary gland
• a gland releasing a hormone into the blood.

Response:

Any behavior of a living organism that results from an externalor internal stimulus